fix: ClientFactory not properly inheriting k8s pod identity

[roblg]

Issue #, if available: Issue #35

Description of changes: upgrade AWS Java SDK v2 to latest release to pick up some intermediate change that allows the default authenticator chain to properly inherit credentials from kubernetes pod identity/environment.

Testing done:

• sbt package
• sbt test
• took the result of sbt package, replaced the .jar file included with my pip install version of sagemaker-feature-store-pyspark library --> success. (The assume-role works properly now, and the following code for ingesting to online feature store begins executing.)

Merge Checklist

General

• I have read the CONTRIBUTING doc
• I certify that the changes I am introducing will be backword compatible -- to the best of ability, as a consumer of AWS SDK v2
• I used the commit message format described in CONTRIBUTING doc

Tests

• I have added tests that prove my fix is effective or that my feature works (if appropriate)
• I have added unit and/or integration tests as appropriate to ensure backward compatibility of the changes
• I have verified all code in this commit are well formatted

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.